desktop-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Josh Cogliati, this bug was reported a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal as it will automatically gather
and attach updated debug information to this report:

apport-collect -p xorg 1398840

Please ensure you have xdiagnose installed, and that you click the Yes
button for attaching additional debugging information.

As well, given the information from the prior release is already
available, testing a release prior to the development one would not be
helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1398840

Title:
  dual monitors do not work on Mac Pro black cylinder

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  How do I get dual monitors working on a Mac Pro cylinder? I have two
  thunderbolt connected displays (one on a minidisplay port to dvi
  connector, and the other on a mini displayport to vga connector). If I
  plug only one in, it works. If I plug both in at boot up, than one of
  them will work randomly, and the other will not work at all.

  xrandr -q only shows the working one:

  $ xrandr -q
  xrandr: Failed to get size of gamma for output default
  Screen 0: minimum 1600 x 1200, current 1600 x 1200, maximum 1600 x 1200
  default connected primary 1600x1200+0+0 0mm x 0mm
     1600x1200      77.0* 

  I am using the kernel parameter nomodeset or video does not work at
  all.

  I am trying on Ubuntu 14.04 with kernel 3.13.0.39.46.

  # lshw -C display; lsb_release -a; uname -a
    *-display UNCLAIMED
         description: VGA compatible controller
         product: Tahiti LE [Radeon HD 7870 XT]
         vendor: Advanced Micro Devices, Inc. [AMD/ATI]
         physical id: 0
         bus info: pci@0000:02:00.0
         version: 00
         width: 64 bits
         clock: 33MHz
         capabilities: pm pciexpress msi vga_controller bus_master cap_list
         configuration: latency=0
         resources: memory:80000000-8fffffff memory:a0700000-a073ffff ioport:3000(size=256) memory:a0740000-a075ffff
    *-display UNCLAIMED
         description: VGA compatible controller
         product: Tahiti LE [Radeon HD 7870 XT]
         vendor: Advanced Micro Devices, Inc. [AMD/ATI]
         physical id: 0
         bus info: pci@0000:06:00.0
         version: 00
         width: 64 bits
         clock: 33MHz
         capabilities: pm pciexpress msi vga_controller bus_master cap_list
         configuration: latency=0
         resources: memory:90000000-9fffffff memory:a0600000-a063ffff ioport:2000(size=256) memory:a0640000-a065ffff
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description: Ubuntu 14.04.1 LTS
  Release: 14.04
  Codename: trusty
  Linux inl426935 3.13.0-39-generic #66-Ubuntu SMP Tue Oct 28 13:30:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1398840/+subscriptions